package com.game.springbootstart.aspect;

import com.game.springbootstart.annotation.AutoFill;
import com.game.springbootstart.constant.AutoFillConstant;
import com.game.springbootstart.context.BaseContext;
import com.game.springbootstart.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.game.springbootstart.mapper.*.*(..)) && @annotation(com.game.springbootstart.annotation.AutoFill)")
    public void autoFillPointCut() throws Throwable {}

    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint) throws Throwable {
        log.info("开始进行公共字段自动填充");

        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        AutoFill autoFill = methodSignature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = autoFill.value();//获得数据库操作类型

        Object[] args = joinPoint.getArgs();
        if(args == null || args.length == 0){
            return;
        }

        Object arg = args[0];
        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();

        if(operationType == OperationType.INSERT){
            Method setCreateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
            Method setCreateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
            Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
            Method setUpdateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

            setCreateTime.invoke(arg,now);
            setCreateUser.invoke(arg,currentId);
            setUpdateTime.invoke(arg,now);
            setUpdateUser.invoke(arg,currentId);
        }else if(operationType == OperationType.UPDATE){
            Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
            Method setUpdateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);

            setUpdateTime.invoke(arg,now);
            setUpdateUser.invoke(arg,currentId);
        }
    }
}
